三头部中心分级燃烧室出口温度分布研究  

Investigation on Outlet Temperature Distribution of a Three-sector Centrally Staged Combustor

作　　者：杨思恒 王建臣[1] 张弛[1] 王志超 林宇震[1] YANG Si-Heng;WANG Jian-Chen;ZHANG Chi;WANG Zhi-Chao;LIN Yu-Zhen(Beihang University,School of Energy and Power Engineering,National Key Laboratory of Science and Technology on Aero-engine Aero-thermodynamics,Beijing 100191,China)

机构地区：[1]北京航空航天大学能源与动力工程学院,航空发动机气动热力国家级重点实验室,北京100191

出　　处：《工程热物理学报》2021年第10期2737-2748,共12页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.91641109)。

摘　　要：对一个三头部中心分级燃烧室的出口温度分布进行了试验研究,并结合Fluent软件的数值模拟对结果进行分析。研究结果表明:数值模拟结果与试验值吻合较好。预燃级单独工作时,油气比的增加提高了预燃级扩散火焰的温度造成了中心局部高温区的形成,增大了出口OTDF;双火焰模式下,出口OTDF指数显著降低;主燃级旋流数增加能够增加掺混时间,减小OTDF;主燃级燃油横向喷射(JA=-50°)时,主燃级火焰径向外扩且出口OTDF指数最低。The outlet temperature distribution of a three-sector centrally staged combustor is experimentally investigated.The software FLUENT is applied for the numerical simulation to help analyze the results.The results indicate that the numerical simulation results are in good agreement with the experimental results.The increase of fuel to air ratio forms the central high temperature zone and increases the OTDF.The OTDF significantly decreases in the dual-flame mode.The increase of main stage swirler can increase the mixing time and decrease the OTDF.When the main stage fuel is laterally injected(JA=-50°),the main flame moves radially outside and the OTDF is lowest.

关 键 词：中心分级燃烧室 出口温度分布 燃油喷射 数值模拟 

分 类 号：TK123[动力工程及工程热物理—工程热物理]